After about 45 mins listening to streamed music from my NAS, the music suddenly cut-out and the controller 200 froze. When it re-awoke, both zoneplayers were not listed and would not reconnect when I tried to add them again. Unplugged zonebridge and restarted it, again connection to zoneplayers would not work.
Changed wireless channel to 6 (from 11) and this temporarily resolved issue (for about 3 mins). Changed back to channel 11, added first zoneplayer ok and then the second zoneplayer reappeared on the controller. Total time trying to reconnect was approx 30 mins.
Does anyone know what problem was and if it will re-occur? Everything now working ok again.